diff options
Diffstat (limited to 'src/math/modff.c')
| -rw-r--r-- | src/math/modff.c | 28 |
1 files changed, 16 insertions, 12 deletions
diff --git a/src/math/modff.c b/src/math/modff.c index bf6e4ced..84d0b82a 100644 --- a/src/math/modff.c +++ b/src/math/modff.c @@ -1,33 +1,37 @@ -#include "libm.h" +#include <math.h> +#include <stdint.h> float modff(float x, float *iptr) { - uint32_t u, mask; + union {float x; uint32_t n;} u = {x}; + uint32_t mask; int e; - GET_FLOAT_WORD(u, x); - e = (int)(u>>23 & 0xff) - 0x7f; + e = (int)(u.n>>23 & 0xff) - 0x7f; /* no fractional part */ if (e >= 23) { *iptr = x; - if (e == 0x80 && u<<9 != 0) /* nan */ + if (e == 0x80 && u.n<<9 != 0) { /* nan */ return x; - SET_FLOAT_WORD(x, u & 0x80000000); - return x; + } + u.n &= 0x80000000; + return u.x; } /* no integral part */ if (e < 0) { - SET_FLOAT_WORD(*iptr, u & 0x80000000); + u.n &= 0x80000000; + *iptr = u.x; return x; } mask = 0x007fffff>>e; - if ((u & mask) == 0) { + if ((u.n & mask) == 0) { *iptr = x; - SET_FLOAT_WORD(x, u & 0x80000000); - return x; + u.n &= 0x80000000; + return u.x; } - SET_FLOAT_WORD(*iptr, u & ~mask); + u.n &= ~mask; + *iptr = u.x; return x - *iptr; } |