Added the C benchmark files

Author: anandkaranubc

lib/node_modules/@stdlib/stats/base/dists/arcsine/skewness/benchmark/c/Makefile

@@ -0,0 +1,146 @@
+#/
+# @license Apache-2.0
+#
+# Copyright (c) 2024 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

lib/node_modules/@stdlib/stats/base/dists/arcsine/skewness/benchmark/c/benchmark.c

@@ -0,0 +1,139 @@
+/**
+ * @license Apache-2.0
+ *
+ * Copyright (c) 2024 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/arcsine/skewness.h"
+#include <stdlib.h>
+#include <stdio.h>
+#include <time.h>
+#include <sys/time.h>
+
+#define NAME "arcsine-skewness"
+#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 y;
+    double t;
+    int i;
+
+    for ( i = 0; i < 100; i++ ) {
+        a[ i ] = random_uniform( -20.0, 0.0 );
+        b[ i ] = random_uniform( a[ i ], a[ i ]+40.0 );
+    }
+
+    t = tic();
+    for ( i = 0; i < ITERATIONS; i++ ) {
+        y = stdlib_base_dists_arcsine_skewness( a[ i%100 ], b[ 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 );
+}