feat: add implementation of stdlib/math/base/special/heaviside

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---

Author: sahil20021008

lib/node_modules/@stdlib/math/base/special/heaviside/benchmark/c/Makefile

@@ -1,7 +1,7 @@
 #/
 # @license Apache-2.0
 #
-# Copyright (c) 2018 The Stdlib Authors.
+# 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.
@@ -16,7 +16,6 @@
 # limitations under the License.
 #/
 
-
 # VARIABLES #
 
 ifndef VERBOSE
@@ -70,18 +69,34 @@ 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 C source files.
+# Compiles source files.
 #
-# @param {string} [C_COMPILER] - C compiler
-# @param {string} [CFLAGS] - C compiler flags
-# @param {(string|void)} [fPIC] - compiler flag indicating whether to generate position independent code
+# @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
@@ -97,12 +112,16 @@ all: $(c_targets)
 # Compiles C source files.
 #
 # @private
-# @param {string} CC - C compiler
-# @param {string} CFLAGS - C compiler flags
-# @param {(string|void)} fPIC - compiler flag indicating whether to generate position independent code
+# @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) -o $@ $< -lm
+	$(QUIET) $(CC) $(CFLAGS) $(fPIC) $(INCLUDE) -o $@ $(SOURCE_FILES) $< $(LIBPATH) -lm $(LIBRARIES)
 
 #/
 # Runs compiled benchmarks.