diff --git a/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/README.md b/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/README.md
index 908bb4d19c58..90dc3ccc71fb 100644
--- a/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/README.md
+++ b/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/README.md
@@ -121,7 +121,7 @@ y = mylogcdf( 8.0 );
## Notes
-- In virtually all cases, using the `logpdf` or `logcdf` functions is preferable to manually computing the logarithm of the `pdf` or `cdf`, respectively, since the latter is prone to overflow and underflow.
+- In virtually all cases, using the `logcdf` or `logcdf` functions is preferable to manually computing the logarithm of the `pdf` or `cdf`, respectively, since the latter is prone to overflow and underflow.
@@ -158,6 +158,105 @@ for ( i = 0; i < 25; i++ ) {
+
+
+* * *
+
+
+
+## C APIs
+
+
+
+
+
+
+
+
+
+
+
+### Usage
+
+```c
+#include "stdlib/stats/base/dists/geometric/logcdf.h"
+```
+
+#### stdlib_base_dists_geometric_logcdf( x, a, b, c )
+
+Evaluates the natural logarithm of the [cumulative distribution function][cdf] (CDF) for a [triangular][triangular-distribution] distribution with parameters `a` (lower limit), `b` (upper limit) and `c` (mode).
+
+```c
+double y = stdlib_base_dists_geometric_logcdf( 0.5, -1.0, 1.0, 0.0 );
+// returns ~-0.134
+```
+
+The function accepts the following arguments:
+
+- **x**: `[in] double` input value.
+- **a**: `[in] double` lower limit.
+- **b**: `[in] double` upper limit.
+- **c**: `[in] double` mode.
+
+```c
+double stdlib_base_dists_geometric_logcdf( const double x, const double a, const double b, const double c );
+```
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+### Examples
+
+```c
+#include "stdlib/stats/base/dists/triangular/logcdf.h"
+#include "stdlib/constants/float64/eps.h"
+#include
+#include
+#include
+
+static double random_uniform( const double min, const double max ) {
+ double v = (double)rand() / ( (double)RAND_MAX + 1.0 );
+ return min + ( v*(max-min) );
+}
+
+int main( void ) {
+ double a;
+ double b;
+ double c;
+ double x;
+ double y;
+ int i;
+
+ for ( i = 0; i < 25; i++ ) {
+ x = random_uniform( 0.0, 30.0 );
+ a = random_uniform( 0.0, 10.0 );
+ b = random_uniform( a + STDLIB_CONSTANT_FLOAT64_EPS, 40.0 );
+ c = random_uniform( a, b );
+ y = stdlib_base_dists_triangular_logcdf( x, a, b, c );
+ printf( "x: %lf, a: %lf, b: %lf, c: %lf, ln(F(x;a,b,c)): %lf\n", x, a, b, c, y );
+ }
+}
+```
+
+
+
+
+
diff --git a/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/benchmark/benchmark.js b/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/benchmark/benchmark.js
index caade3f3d97d..414489d9cd3e 100644
--- a/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/benchmark/benchmark.js
+++ b/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/benchmark/benchmark.js
@@ -21,8 +21,9 @@
// MODULES //
var bench = require( '@stdlib/bench' );
-var randu = require( '@stdlib/random/base/randu' );
+var uniform = require( '@stdlib/random/base/uniform' );
var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var Float64Array = require( '@stdlib/array/float64' );
var EPS = require( '@stdlib/constants/float64/eps' );
var pkg = require( './../package.json' ).name;
var logcdf = require( './../lib' );
@@ -34,17 +35,26 @@ bench( pkg, function benchmark( b ) {
var mode;
var min;
var max;
+ var len;
var x;
var y;
var i;
+ len = 100;
+ x = new Float64Array( len );
+ min = new Float64Array( len );
+ max = new Float64Array( len );
+ mode = new Float64Array( len );
+ for ( i = 0; i < len; i++ ) {
+ x[ i ] = uniform( 0.0, 30.0 );
+ min[ i ] = uniform( 0.0, 10.0 );
+ max[ i ] = uniform( min[ i ] + EPS, min[ i ] + 40.0 );
+ mode[ i ] = uniform( min[ i ], max[ i ] );
+ }
+
b.tic();
for ( i = 0; i < b.iterations; i++ ) {
- x = randu() * 30.0;
- min = randu() * 10.0;
- max = min + ( randu() * 40.0 ) + EPS;
- mode = min + ( ( max - min ) * randu() );
- y = logcdf( x, min, max, mode );
+ y = logcdf( x[ i%len ], min[ i%len ], max[ i%len ], mode[ i%len ] );
if ( isnan( y ) ) {
b.fail( 'should not return NaN' );
}
@@ -73,7 +83,7 @@ bench( pkg+':factory', function benchmark( b ) {
b.tic();
for ( i = 0; i < b.iterations; i++ ) {
- x = ( randu()*2.0 ) - 2.0;
+ x = uniform( -2.0, 2.0 );
y = mylogcdf( x );
if ( isnan( y ) ) {
b.fail( 'should not return NaN' );
diff --git a/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/benchmark/benchmark.native.js b/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/benchmark/benchmark.native.js
new file mode 100644
index 000000000000..278264aa095e
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/benchmark/benchmark.native.js
@@ -0,0 +1,77 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var resolve = require( 'path' ).resolve;
+var bench = require( '@stdlib/bench' );
+var Float64Array = require( '@stdlib/array/float64' );
+var uniform = require( '@stdlib/random/base/uniform' );
+var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var tryRequire = require( '@stdlib/utils/try-require' );
+var EPS = require( '@stdlib/constants/float64/eps' );
+var pkg = require( './../package.json' ).name;
+
+
+// VARIABLES //
+
+var logcdf = tryRequire( resolve( __dirname, './../lib/native.js' ) );
+var opts = {
+ 'skip': ( logcdf instanceof Error )
+};
+
+
+// MAIN //
+
+bench( pkg+'::native', opts, function benchmark( b ) {
+ var mode;
+ var min;
+ var max;
+ var len;
+ var x;
+ var y;
+ var i;
+
+ len = 100;
+ x = new Float64Array( len );
+ min = new Float64Array( len );
+ max = new Float64Array( len );
+ mode = new Float64Array( len );
+ for ( i = 0; i < len; i++ ) {
+ x[ i ] = uniform( 0.0, 30.0 );
+ min[ i ] = uniform( 0.0, 10.0 );
+ max[ i ] = uniform( min[ i ] + EPS, 40.0 );
+ mode[ i ] = uniform( min[ i ], max[ i ] );
+ }
+
+ b.tic();
+ for ( i = 0; i < b.iterations; i++ ) {
+ y = logcdf( x[ i%len ], min[ i%len ], max[ i%len ], mode[ i%len ] );
+ if ( isnan( y ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ }
+ b.toc();
+ if ( isnan( y ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ b.pass( 'benchmark finished' );
+ b.end();
+});
diff --git a/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/benchmark/c/Makefile b/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/benchmark/c/Makefile
new file mode 100644
index 000000000000..a4bd7b38fd74
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/benchmark/c/Makefile
@@ -0,0 +1,146 @@
+#/
+# @license Apache-2.0
+#
+# Copyright (c) 2025 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#/
+
+# VARIABLES #
+
+ifndef VERBOSE
+ QUIET := @
+else
+ QUIET :=
+endif
+
+# Determine the OS ([1][1], [2][2]).
+#
+# [1]: https://en.wikipedia.org/wiki/Uname#Examples
+# [2]: http://stackoverflow.com/a/27776822/2225624
+OS ?= $(shell uname)
+ifneq (, $(findstring MINGW,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring MSYS,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring CYGWIN,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring Windows_NT,$(OS)))
+ OS := WINNT
+endif
+endif
+endif
+endif
+
+# Define the program used for compiling C source files:
+ifdef C_COMPILER
+ CC := $(C_COMPILER)
+else
+ CC := gcc
+endif
+
+# Define the command-line options when compiling C files:
+CFLAGS ?= \
+ -std=c99 \
+ -O3 \
+ -Wall \
+ -pedantic
+
+# Determine whether to generate position independent code ([1][1], [2][2]).
+#
+# [1]: https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html#Code-Gen-Options
+# [2]: http://stackoverflow.com/questions/5311515/gcc-fpic-option
+ifeq ($(OS), WINNT)
+ fPIC ?=
+else
+ fPIC ?= -fPIC
+endif
+
+# List of includes (e.g., `-I /foo/bar -I /beep/boop/include`):
+INCLUDE ?=
+
+# List of source files:
+SOURCE_FILES ?=
+
+# List of libraries (e.g., `-lopenblas -lpthread`):
+LIBRARIES ?=
+
+# List of library paths (e.g., `-L /foo/bar -L /beep/boop`):
+LIBPATH ?=
+
+# List of C targets:
+c_targets := benchmark.out
+
+
+# RULES #
+
+#/
+# Compiles source files.
+#
+# @param {string} [C_COMPILER] - C compiler (e.g., `gcc`)
+# @param {string} [CFLAGS] - C compiler options
+# @param {(string|void)} [fPIC] - compiler flag determining whether to generate position independent code (e.g., `-fPIC`)
+# @param {string} [INCLUDE] - list of includes (e.g., `-I /foo/bar -I /beep/boop/include`)
+# @param {string} [SOURCE_FILES] - list of source files
+# @param {string} [LIBPATH] - list of library paths (e.g., `-L /foo/bar -L /beep/boop`)
+# @param {string} [LIBRARIES] - list of libraries (e.g., `-lopenblas -lpthread`)
+#
+# @example
+# make
+#
+# @example
+# make all
+#/
+all: $(c_targets)
+
+.PHONY: all
+
+#/
+# Compiles C source files.
+#
+# @private
+# @param {string} CC - C compiler (e.g., `gcc`)
+# @param {string} CFLAGS - C compiler options
+# @param {(string|void)} fPIC - compiler flag determining whether to generate position independent code (e.g., `-fPIC`)
+# @param {string} INCLUDE - list of includes (e.g., `-I /foo/bar`)
+# @param {string} SOURCE_FILES - list of source files
+# @param {string} LIBPATH - list of library paths (e.g., `-L /foo/bar`)
+# @param {string} LIBRARIES - list of libraries (e.g., `-lopenblas`)
+#/
+$(c_targets): %.out: %.c
+ $(QUIET) $(CC) $(CFLAGS) $(fPIC) $(INCLUDE) -o $@ $(SOURCE_FILES) $< $(LIBPATH) -lm $(LIBRARIES)
+
+#/
+# Runs compiled benchmarks.
+#
+# @example
+# make run
+#/
+run: $(c_targets)
+ $(QUIET) ./$<
+
+.PHONY: run
+
+#/
+# Removes generated files.
+#
+# @example
+# make clean
+#/
+clean:
+ $(QUIET) -rm -f *.o *.out
+
+.PHONY: clean
diff --git a/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/benchmark/c/benchmark.c b/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/benchmark/c/benchmark.c
new file mode 100644
index 000000000000..79bdd968d546
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/benchmark/c/benchmark.c
@@ -0,0 +1,145 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#include "stdlib/stats/base/dists/triangular/logcdf.h"
+#include "stdlib/constants/float64/eps.h"
+#include
+#include
+#include
+#include
+#include
+
+#define NAME "triangular-logcdf"
+#define ITERATIONS 1000000
+#define REPEATS 3
+
+/**
+* Prints the TAP version.
+*/
+static void print_version( void ) {
+ printf( "TAP version 13\n" );
+}
+
+/**
+* Prints the TAP summary.
+*
+* @param total total number of tests
+* @param passing total number of passing tests
+*/
+static void print_summary( int total, int passing ) {
+ printf( "#\n" );
+ printf( "1..%d\n", total ); // TAP plan
+ printf( "# total %d\n", total );
+ printf( "# pass %d\n", passing );
+ printf( "#\n" );
+ printf( "# ok\n" );
+}
+
+/**
+* Prints benchmarks results.
+*
+* @param elapsed elapsed time in seconds
+*/
+static void print_results( double elapsed ) {
+ double rate = (double)ITERATIONS / elapsed;
+ printf( " ---\n" );
+ printf( " iterations: %d\n", ITERATIONS );
+ printf( " elapsed: %0.9f\n", elapsed );
+ printf( " rate: %0.9f\n", rate );
+ printf( " ...\n" );
+}
+
+/**
+* Returns a clock time.
+*
+* @return clock time
+*/
+static double tic( void ) {
+ struct timeval now;
+ gettimeofday( &now, NULL );
+ return (double)now.tv_sec + (double)now.tv_usec/1.0e6;
+}
+
+/**
+* Generates a random number on the interval [min,max).
+*
+* @param min minimum value (inclusive)
+* @param max maximum value (exclusive)
+* @return random number
+*/
+static double random_uniform( const double min, const double max ) {
+ double v = (double)rand() / ( (double)RAND_MAX + 1.0 );
+ return min + ( v*(max-min) );
+}
+
+/**
+* Runs a benchmark.
+*
+* @return elapsed time in seconds
+*/
+static double benchmark( void ) {
+ double elapsed;
+ double a[ 100 ];
+ double b[ 100 ];
+ double c[ 100 ];
+ double x[ 100 ];
+ double y;
+ double t;
+ int i;
+
+ for ( i = 0; i < 100; i++ ) {
+ x[ i ] = random_uniform( 0.0, 30.0 );
+ a[ i ] = random_uniform( 0.0, 10.0 );
+ b[ i ] = random_uniform( a[ i ] + STDLIB_CONSTANT_FLOAT64_EPS, 40.0 );
+ c[ i ] = random_uniform( a[ i ], b[ i ] );
+ }
+
+ t = tic();
+ for ( i = 0; i < ITERATIONS; i++ ) {
+ y = stdlib_base_dists_triangular_logcdf( x[ i % 100 ], a[ i % 100 ], b[ i % 100 ], c[ i % 100 ] );
+ if ( y != y ) {
+ printf( "should not return NaN\n" );
+ break;
+ }
+ }
+ elapsed = tic() - t;
+ if ( y != y ) {
+ printf( "should not return NaN\n" );
+ }
+ return elapsed;
+}
+
+/**
+* Main execution sequence.
+*/
+int main( void ) {
+ double elapsed;
+ int i;
+
+ // Use the current time to seed the random number generator:
+ srand( time( NULL ) );
+
+ print_version();
+ for ( i = 0; i < REPEATS; i++ ) {
+ printf( "# c::%s\n", NAME );
+ elapsed = benchmark();
+ print_results( elapsed );
+ printf( "ok %d benchmark finished\n", i+1 );
+ }
+ print_summary( REPEATS, REPEATS );
+}
diff --git a/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/binding.gyp b/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/binding.gyp
new file mode 100644
index 000000000000..68a1ca11d160
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/binding.gyp
@@ -0,0 +1,170 @@
+# @license Apache-2.0
+#
+# Copyright (c) 2025 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# A `.gyp` file for building a Node.js native add-on.
+#
+# [1]: https://gyp.gsrc.io/docs/InputFormatReference.md
+# [2]: https://gyp.gsrc.io/docs/UserDocumentation.md
+{
+ # List of files to include in this file:
+ 'includes': [
+ './include.gypi',
+ ],
+
+ # Define variables to be used throughout the configuration for all targets:
+ 'variables': {
+ # Target name should match the add-on export name:
+ 'addon_target_name%': 'addon',
+
+ # Set variables based on the host OS:
+ 'conditions': [
+ [
+ 'OS=="win"',
+ {
+ # Define the object file suffix:
+ 'obj': 'obj',
+ },
+ {
+ # Define the object file suffix:
+ 'obj': 'o',
+ }
+ ], # end condition (OS=="win")
+ ], # end conditions
+ }, # end variables
+
+ # Define compile targets:
+ 'targets': [
+
+ # Target to generate an add-on:
+ {
+ # The target name should match the add-on export name:
+ 'target_name': '<(addon_target_name)',
+
+ # Define dependencies:
+ 'dependencies': [],
+
+ # Define directories which contain relevant include headers:
+ 'include_dirs': [
+ # Local include directory:
+ '<@(include_dirs)',
+ ],
+
+ # List of source files:
+ 'sources': [
+ '<@(src_files)',
+ ],
+
+ # Settings which should be applied when a target's object files are used as linker input:
+ 'link_settings': {
+ # Define libraries:
+ 'libraries': [
+ '<@(libraries)',
+ ],
+
+ # Define library directories:
+ 'library_dirs': [
+ '<@(library_dirs)',
+ ],
+ },
+
+ # C/C++ compiler flags:
+ 'cflags': [
+ # Enable commonly used warning options:
+ '-Wall',
+
+ # Aggressive optimization:
+ '-O3',
+ ],
+
+ # C specific compiler flags:
+ 'cflags_c': [
+ # Specify the C standard to which a program is expected to conform:
+ '-std=c99',
+ ],
+
+ # C++ specific compiler flags:
+ 'cflags_cpp': [
+ # Specify the C++ standard to which a program is expected to conform:
+ '-std=c++11',
+ ],
+
+ # Linker flags:
+ 'ldflags': [],
+
+ # Apply conditions based on the host OS:
+ 'conditions': [
+ [
+ 'OS=="mac"',
+ {
+ # Linker flags:
+ 'ldflags': [
+ '-undefined dynamic_lookup',
+ '-Wl,-no-pie',
+ '-Wl,-search_paths_first',
+ ],
+ },
+ ], # end condition (OS=="mac")
+ [
+ 'OS!="win"',
+ {
+ # C/C++ flags:
+ 'cflags': [
+ # Generate platform-independent code:
+ '-fPIC',
+ ],
+ },
+ ], # end condition (OS!="win")
+ ], # end conditions
+ }, # end target <(addon_target_name)
+
+ # Target to copy a generated add-on to a standard location:
+ {
+ 'target_name': 'copy_addon',
+
+ # Declare that the output of this target is not linked:
+ 'type': 'none',
+
+ # Define dependencies:
+ 'dependencies': [
+ # Require that the add-on be generated before building this target:
+ '<(addon_target_name)',
+ ],
+
+ # Define a list of actions:
+ 'actions': [
+ {
+ 'action_name': 'copy_addon',
+ 'message': 'Copying addon...',
+
+ # Explicitly list the inputs in the command-line invocation below:
+ 'inputs': [],
+
+ # Declare the expected outputs:
+ 'outputs': [
+ '<(addon_output_dir)/<(addon_target_name).node',
+ ],
+
+ # Define the command-line invocation:
+ 'action': [
+ 'cp',
+ '<(PRODUCT_DIR)/<(addon_target_name).node',
+ '<(addon_output_dir)/<(addon_target_name).node',
+ ],
+ },
+ ], # end actions
+ }, # end target copy_addon
+ ], # end targets
+}
diff --git a/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/examples/c/Makefile b/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/examples/c/Makefile
new file mode 100644
index 000000000000..25ced822f96a
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/examples/c/Makefile
@@ -0,0 +1,146 @@
+#/
+# @license Apache-2.0
+#
+# Copyright (c) 2025 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#/
+
+# VARIABLES #
+
+ifndef VERBOSE
+ QUIET := @
+else
+ QUIET :=
+endif
+
+# Determine the OS ([1][1], [2][2]).
+#
+# [1]: https://en.wikipedia.org/wiki/Uname#Examples
+# [2]: http://stackoverflow.com/a/27776822/2225624
+OS ?= $(shell uname)
+ifneq (, $(findstring MINGW,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring MSYS,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring CYGWIN,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring Windows_NT,$(OS)))
+ OS := WINNT
+endif
+endif
+endif
+endif
+
+# Define the program used for compiling C source files:
+ifdef C_COMPILER
+ CC := $(C_COMPILER)
+else
+ CC := gcc
+endif
+
+# Define the command-line options when compiling C files:
+CFLAGS ?= \
+ -std=c99 \
+ -O3 \
+ -Wall \
+ -pedantic
+
+# Determine whether to generate position independent code ([1][1], [2][2]).
+#
+# [1]: https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html#Code-Gen-Options
+# [2]: http://stackoverflow.com/questions/5311515/gcc-fpic-option
+ifeq ($(OS), WINNT)
+ fPIC ?=
+else
+ fPIC ?= -fPIC
+endif
+
+# List of includes (e.g., `-I /foo/bar -I /beep/boop/include`):
+INCLUDE ?=
+
+# List of source files:
+SOURCE_FILES ?=
+
+# List of libraries (e.g., `-lopenblas -lpthread`):
+LIBRARIES ?=
+
+# List of library paths (e.g., `-L /foo/bar -L /beep/boop`):
+LIBPATH ?=
+
+# List of C targets:
+c_targets := example.out
+
+
+# RULES #
+
+#/
+# Compiles source files.
+#
+# @param {string} [C_COMPILER] - C compiler (e.g., `gcc`)
+# @param {string} [CFLAGS] - C compiler options
+# @param {(string|void)} [fPIC] - compiler flag determining whether to generate position independent code (e.g., `-fPIC`)
+# @param {string} [INCLUDE] - list of includes (e.g., `-I /foo/bar -I /beep/boop/include`)
+# @param {string} [SOURCE_FILES] - list of source files
+# @param {string} [LIBPATH] - list of library paths (e.g., `-L /foo/bar -L /beep/boop`)
+# @param {string} [LIBRARIES] - list of libraries (e.g., `-lopenblas -lpthread`)
+#
+# @example
+# make
+#
+# @example
+# make all
+#/
+all: $(c_targets)
+
+.PHONY: all
+
+#/
+# Compiles C source files.
+#
+# @private
+# @param {string} CC - C compiler (e.g., `gcc`)
+# @param {string} CFLAGS - C compiler options
+# @param {(string|void)} fPIC - compiler flag determining whether to generate position independent code (e.g., `-fPIC`)
+# @param {string} INCLUDE - list of includes (e.g., `-I /foo/bar`)
+# @param {string} SOURCE_FILES - list of source files
+# @param {string} LIBPATH - list of library paths (e.g., `-L /foo/bar`)
+# @param {string} LIBRARIES - list of libraries (e.g., `-lopenblas`)
+#/
+$(c_targets): %.out: %.c
+ $(QUIET) $(CC) $(CFLAGS) $(fPIC) $(INCLUDE) -o $@ $(SOURCE_FILES) $< $(LIBPATH) -lm $(LIBRARIES)
+
+#/
+# Runs compiled examples.
+#
+# @example
+# make run
+#/
+run: $(c_targets)
+ $(QUIET) ./$<
+
+.PHONY: run
+
+#/
+# Removes generated files.
+#
+# @example
+# make clean
+#/
+clean:
+ $(QUIET) -rm -f *.o *.out
+
+.PHONY: clean
diff --git a/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/examples/c/example.c b/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/examples/c/example.c
new file mode 100644
index 000000000000..d3e25336df23
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/examples/c/example.c
@@ -0,0 +1,46 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#include "stdlib/stats/base/dists/triangular/logcdf.h"
+#include "stdlib/constants/float64/eps.h"
+#include
+#include
+#include
+
+static double random_uniform( const double min, const double max ) {
+ double v = (double)rand() / ( (double)RAND_MAX + 1.0 );
+ return min + ( v*(max-min) );
+}
+
+int main( void ) {
+ double a;
+ double b;
+ double c;
+ double x;
+ double y;
+ int i;
+
+ for ( i = 0; i < 25; i++ ) {
+ x = random_uniform( 0.0, 30.0 );
+ a = random_uniform( 0.0, 10.0 );
+ b = random_uniform( a + STDLIB_CONSTANT_FLOAT64_EPS, 40.0 );
+ c = random_uniform( a, b );
+ y = stdlib_base_dists_triangular_logcdf( x, a, b, c );
+ printf( "x: %lf, a: %lf, b: %lf, c: %lf, ln(F(x;a,b,c)): %lf\n", x, a, b, c, y );
+ }
+}
diff --git a/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/include.gypi b/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/include.gypi
new file mode 100644
index 000000000000..ecfaf82a3279
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/include.gypi
@@ -0,0 +1,53 @@
+# @license Apache-2.0
+#
+# Copyright (c) 2025 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# A GYP include file for building a Node.js native add-on.
+#
+# Main documentation:
+#
+# [1]: https://gyp.gsrc.io/docs/InputFormatReference.md
+# [2]: https://gyp.gsrc.io/docs/UserDocumentation.md
+{
+ # Define variables to be used throughout the configuration for all targets:
+ 'variables': {
+ # Source directory:
+ 'src_dir': './src',
+
+ # Include directories:
+ 'include_dirs': [
+ ' c ||
+ c > b
+ ) {
+ return 0.0/0.0; // NaN
+ }
+ if ( x <= a ) {
+ return STDLIB_CONSTANT_FLOAT64_NINF;
+ }
+ if ( x <= c ) {
+ return ( 2.0 * stdlib_base_ln( x - a ) - stdlib_base_ln( ( b - a ) * ( c - a ) ) );
+ }
+ if( x < b ){
+ return stdlib_base_ln( 1.0 - ( stdlib_base_pow( b - x, 2.0 ) / ( ( b - a ) * ( b - c ) ) ) );
+ }
+ return 0.0;
+}
diff --git a/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/test/test.logcdf.js b/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/test/test.logcdf.js
index 3b5185f8b36b..0e6a306c98ca 100644
--- a/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/test/test.logcdf.js
+++ b/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/test/test.logcdf.js
@@ -47,12 +47,16 @@ tape( 'main export is a function', function test( t ) {
tape( 'if provided `NaN` for any parameter, the function returns `NaN`', function test( t ) {
var y = logcdf( NaN, 0.0, 1.0, 0.5 );
t.equal( isnan( y ), true, 'returns NaN' );
+
y = logcdf( 0.0, NaN, 1.0, 0.5 );
t.equal( isnan( y ), true, 'returns NaN' );
+
y = logcdf( 0.0, 1.0, NaN, 0.5 );
t.equal( isnan( y ), true, 'returns NaN' );
+
y = logcdf( 0.0, 0.0, 1.0, NaN );
t.equal( isnan( y ), true, 'returns NaN' );
+
t.end();
});
diff --git a/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/test/test.native.js b/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/test/test.native.js
new file mode 100644
index 000000000000..656dcee686b0
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/base/dists/triangular/logcdf/test/test.native.js
@@ -0,0 +1,187 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var resolve = require( 'path' ).resolve;
+var tape = require( 'tape' );
+var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var abs = require( '@stdlib/math/base/special/abs' );
+var PINF = require( '@stdlib/constants/float64/pinf' );
+var NINF = require( '@stdlib/constants/float64/ninf' );
+var EPS = require( '@stdlib/constants/float64/eps' );
+var tryRequire = require( '@stdlib/utils/try-require' );
+
+
+// FIXTURES //
+
+var smallRange = require( './fixtures/julia/small_range.json' );
+var mediumRange = require( './fixtures/julia/medium_range.json' );
+var largeRange = require( './fixtures/julia/large_range.json' );
+
+
+// VARIABLES //
+
+var logcdf = tryRequire( resolve( __dirname, './../lib/native.js' ) );
+var opts = {
+ 'skip': ( logcdf instanceof Error )
+};
+
+
+// TESTS //
+
+tape( 'main export is a function', opts, function test( t ) {
+ t.ok( true, __filename );
+ t.strictEqual( typeof logcdf, 'function', 'main export is a function' );
+ t.end();
+});
+
+tape( 'if provided `NaN` for any parameter, the function returns `NaN`', opts, function test( t ) {
+ var y = logcdf( NaN, 0.0, 1.0, 0.5 );
+ t.equal( isnan( y ), true, 'returns NaN' );
+
+ y = logcdf( 0.0, NaN, 1.0, 0.5 );
+ t.equal( isnan( y ), true, 'returns NaN' );
+
+ y = logcdf( 0.0, 1.0, NaN, 0.5 );
+ t.equal( isnan( y ), true, 'returns NaN' );
+
+ y = logcdf( 0.0, 0.0, 1.0, NaN );
+ t.equal( isnan( y ), true, 'returns NaN' );
+
+ t.end();
+});
+
+tape( 'if provided `+infinity` for `x` and a valid `a`, `b` and `c`, the function returns `0`', opts, function test( t ) {
+ var y = logcdf( PINF, 0.0, 1.0, 0.5 );
+ t.equal( y, 0.0, 'returns 0' );
+ t.end();
+});
+
+tape( 'if provided `-infinity` for `x` and a valid `a`, `b` and `c`, the function returns `-infinity`', opts, function test( t ) {
+ var y = logcdf( NINF, 0.0, 1.0, 0.5 );
+ t.equal( y, NINF, 'returns -infinity' );
+ t.end();
+});
+
+tape( 'if provided parameters not satisfying `a <= c <= b`, the function returns `NaN`', opts, function test( t ) {
+ var y;
+
+ y = logcdf( 2.0, -1.0, -1.1, -1.0 );
+ t.equal( isnan( y ), true, 'returns NaN' );
+
+ y = logcdf( 0.0, 3.0, 2.0, 2.5 );
+ t.equal( isnan( y ), true, 'returns NaN' );
+
+ y = logcdf( 0.0, 0.0, 1.0, -1.0 );
+ t.equal( isnan( y ), true, 'returns NaN' );
+
+ y = logcdf( 0.0, 0.0, 1.0, 2.0 );
+ t.equal( isnan( y ), true, 'returns NaN' );
+
+ t.end();
+});
+
+tape( 'the function evaluates the logcdf for `x` given a small range `b - a`', opts, function test( t ) {
+ var expected;
+ var delta;
+ var tol;
+ var x;
+ var a;
+ var b;
+ var c;
+ var y;
+ var i;
+
+ expected = smallRange.expected;
+ x = smallRange.x;
+ a = smallRange.a;
+ b = smallRange.b;
+ c = smallRange.c;
+ for ( i = 0; i < x.length; i++ ) {
+ y = logcdf( x[i], a[i], b[i], c[i] );
+ if ( y === expected[i] ) {
+ t.equal( y, expected[i], 'x: '+x[i]+', a: '+a[i]+', b: '+b[i]+', c: '+c[i]+', y: '+y+', expected: '+expected[i] );
+ } else {
+ delta = abs( y - expected[ i ] );
+ tol = 10.0 * EPS * abs( expected[ i ] );
+ t.ok( delta <= tol, 'within tolerance. x: '+x[ i ]+'. a: '+a[i]+'. b: '+b[i]+'. c: '+c[i]+'. y: '+y+'. E: '+expected[ i ]+'. Δ: '+delta+'. tol: '+tol+'.' );
+ }
+ }
+ t.end();
+});
+
+tape( 'the function evaluates the logcdf for `x` given a medium range `b - a`', opts, function test( t ) {
+ var expected;
+ var delta;
+ var tol;
+ var x;
+ var a;
+ var b;
+ var c;
+ var y;
+ var i;
+
+ expected = mediumRange.expected;
+ x = mediumRange.x;
+ a = mediumRange.a;
+ b = mediumRange.b;
+ c = mediumRange.c;
+ for ( i = 0; i < x.length; i++ ) {
+ y = logcdf( x[i], a[i], b[i], c[i] );
+ if ( y === expected[i] ) {
+ t.equal( y, expected[i], 'x: '+x[i]+', a: '+a[i]+', b: '+b[i]+', c: '+c[i]+', y: '+y+', expected: '+expected[i] );
+ } else {
+ delta = abs( y - expected[ i ] );
+ tol = 10.0 * EPS * abs( expected[ i ] );
+ t.ok( delta <= tol, 'within tolerance. x: '+x[ i ]+'. a: '+a[i]+'. b: '+b[i]+'. c: '+c[i]+'. y: '+y+'. E: '+expected[ i ]+'. Δ: '+delta+'. tol: '+tol+'.' );
+ }
+ }
+ t.end();
+});
+
+tape( 'the function evaluates the logcdf for `x` given a large range `b - a`', opts, function test( t ) {
+ var expected;
+ var delta;
+ var tol;
+ var x;
+ var a;
+ var b;
+ var c;
+ var y;
+ var i;
+
+ expected = largeRange.expected;
+ x = largeRange.x;
+ a = largeRange.a;
+ b = largeRange.b;
+ c = largeRange.c;
+ for ( i = 0; i < x.length; i++ ) {
+ y = logcdf( x[i], a[i], b[i], c[i] );
+ if ( y === expected[i] ) {
+ t.equal( y, expected[i], 'x: '+x[i]+', a: '+a[i]+', b: '+b[i]+', c: '+c[i]+', y: '+y+', expected: '+expected[i] );
+ } else {
+ delta = abs( y - expected[ i ] );
+ tol = 10.0 * EPS * abs( expected[ i ] );
+ t.ok( delta <= tol, 'within tolerance. x: '+x[ i ]+'. a: '+a[i]+'. b: '+b[i]+'. c: '+c[i]+'. y: '+y+'. E: '+expected[ i ]+'. Δ: '+delta+'. tol: '+tol+'.' );
+ }
+ }
+ t.end();
+});