diff options
Diffstat (limited to 'src/stdlib/numX.c.h')
| -rw-r--r-- | src/stdlib/numX.c.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/stdlib/numX.c.h b/src/stdlib/numX.c.h index 2fde8c45..a8ab0de8 100644 --- a/src/stdlib/numX.c.h +++ b/src/stdlib/numX.c.h @@ -6,11 +6,13 @@ // #include <float.h> #include <gc.h> +#include <gmp.h> #include <math.h> #include <stdbool.h> #include <stdint.h> #include <stdlib.h> +#include "fail.h" #include "text.h" #include "types.h" @@ -89,6 +91,42 @@ PUREFUNC int32_t NAMESPACED(compare)(const void *x, const void *y, const TypeInf } #endif +#ifdef __GNUC__ +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wfloat-equal" +#endif +public +CONSTFUNC NUM_T NAMESPACED(from_int)(Int_t i, bool truncate) { + if likely (i.small & 0x1) { + NUM_T ret = (NUM_T)(i.small >> 2); + if unlikely (!truncate && (int64_t)ret != (i.small >> 2)) + fail_text(Text$concat(Text("Could not convert integer to " TYPE_STR " without losing precision: "), + Int64$value_as_text(i.small >> 2))); + return ret; + } else { + NUM_T ret = mpz_get_d(i.big); + if (!truncate) { + mpz_t roundtrip; + mpz_init_set_d(roundtrip, (double)ret); + if unlikely (mpz_cmp(i.big, roundtrip) != 0) + fail_text(Text$concat(Text("Could not convert integer to " TYPE_STR " without losing precision: "), + Int$value_as_text(i))); + } + return ret; + } +} +#ifdef __GNUC__ +#pragma GCC diagnostic pop +#endif +public +CONSTFUNC NUM_T NAMESPACED(from_int64)(Int64_t i, bool truncate) { + NUM_T n = (NUM_T)i; + if unlikely (!truncate && (Int64_t)n != i) + fail_text(Text$concat(Text("Could not convert integer to " TYPE_STR " without losing precision: "), + Int64$value_as_text(i))); + return n; +} + public PUREFUNC bool NAMESPACED(equal)(const void *x, const void *y, const TypeInfo_t *info) { (void)info; |