Implemented math.h

libc/math/const.c

@@ -0,0 +1,43 @@
+#include <math.h>
+
+double nan(const char* tagp) {
+    (void)tagp;
+
+    // Create a NaN bit pattern in IEEE 754
+    uint64_t nanBits = 0x7ff8000000000000ULL;
+    double result;
+    memcpy(&result, &nanBits, sizeof(result));
+    return result;
+}
+
+double inf() {
+    // Create an infinity bit pattern in IEEE 754
+    uint64_t infBits = 0x7ff0000000000000ULL;
+    double result;
+    memcpy(&result, &infBits, sizeof(result));
+    return result;
+}
+
+int isfinite(double x) {
+    uint64_t bits;
+    memcpy(&bits, &x, sizeof(bits));
+    uint64_t exponent = (bits >> 52) & 0x7ff;
+    return exponent != 0x7ff;
+}
+
+int isinf(double x) {
+    uint64_t bits;
+    memcpy(&bits, &x, sizeof(bits));
+    uint64_t exponent = (bits >> 52) & 0x7ff;
+    uint64_t mantissa = bits & 0xfffffffffffff;
+    return (exponent == 0x7ff && mantissa == 0);
+}
+
+int isnan(double x) {
+    uint64_t bits;
+    memcpy(&bits, &x, sizeof(bits));
+    uint64_t exponent = (bits >> 52) & 0x7ff;
+    uint64_t mantissa = bits & 0xfffffffffffff;
+    return (exponent == 0x7ff && mantissa != 0);
+}
+