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| author | Keith Packard via Newlib <newlib@sourceware.org> | 2020-03-25 17:18:20 -0700 |
|---|---|---|
| committer | Corinna Vinschen <corinna@vinschen.de> | 2020-03-26 12:21:33 +0100 |
| commit | 3439f3b0e998fd59f4ed277bb0c05bf24d7dc831 (patch) | |
| tree | 7fc36a74f6ae46f8923e2481ff0727fbcb478131 /newlib | |
| parent | 61cd34c1bfab626c084fd4289657b8f1ac43a138 (diff) | |
| download | newlib-3439f3b0e998fd59f4ed277bb0c05bf24d7dc831.zip newlib-3439f3b0e998fd59f4ed277bb0c05bf24d7dc831.tar.gz newlib-3439f3b0e998fd59f4ed277bb0c05bf24d7dc831.tar.bz2 | |
newlib/libm/common: Don't re-convert float to bits in modf/modff
These functions shared a pattern of re-converting the argument to bits
when returning +/-0. Skip that as the initial conversion still has the
sign bit.
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'newlib')
| -rw-r--r-- | newlib/libm/common/s_modf.c | 12 | ||||
| -rw-r--r-- | newlib/libm/common/sf_modf.c | 8 |
2 files changed, 5 insertions, 15 deletions
diff --git a/newlib/libm/common/s_modf.c b/newlib/libm/common/s_modf.c index c826580..e552a94 100644 --- a/newlib/libm/common/s_modf.c +++ b/newlib/libm/common/s_modf.c @@ -81,10 +81,8 @@ QUICKREF } else { i = (0x000fffff)>>j0; if(((i0&i)|i1)==0) { /* x is integral */ - __uint32_t high; *iptr = x; - GET_HIGH_WORD(high,x); - INSERT_WORDS(x,high&0x80000000,0); /* return +-0 */ + INSERT_WORDS(x,i0&0x80000000,0); /* return +-0 */ return x; } else { INSERT_WORDS(*iptr,i0&(~i),0); @@ -92,19 +90,15 @@ QUICKREF } } } else if (j0>51) { /* no fraction part */ - __uint32_t high; *iptr = x; if (__fpclassifyd(x) == FP_NAN) return *iptr = x+x; /* x is NaN, return NaN */ - GET_HIGH_WORD(high,x); - INSERT_WORDS(x,high&0x80000000,0); /* return +-0 */ + INSERT_WORDS(x,i0&0x80000000,0); /* return +-0 */ return x; } else { /* fraction part in low x */ i = ((__uint32_t)(0xffffffff))>>(j0-20); if((i1&i)==0) { /* x is integral */ - __uint32_t high; *iptr = x; - GET_HIGH_WORD(high,x); - INSERT_WORDS(x,high&0x80000000,0); /* return +-0 */ + INSERT_WORDS(x,i0&0x80000000,0); /* return +-0 */ return x; } else { INSERT_WORDS(*iptr,i0,i1&(~i)); diff --git a/newlib/libm/common/sf_modf.c b/newlib/libm/common/sf_modf.c index e241e46..2994378 100644 --- a/newlib/libm/common/sf_modf.c +++ b/newlib/libm/common/sf_modf.c @@ -33,10 +33,8 @@ } else { i = (0x007fffff)>>j0; if((i0&i)==0) { /* x is integral */ - __uint32_t ix; *iptr = x; - GET_FLOAT_WORD(ix,x); - SET_FLOAT_WORD(x,ix&0x80000000); /* return +-0 */ + SET_FLOAT_WORD(x,i0&0x80000000); /* return +-0 */ return x; } else { SET_FLOAT_WORD(*iptr,i0&(~i)); @@ -44,11 +42,9 @@ } } } else { /* no fraction part */ - __uint32_t ix; *iptr = x; if (__fpclassifyf(x) == FP_NAN) return *iptr = x+x; /* x is NaN, return NaN */ - GET_FLOAT_WORD(ix,x); - SET_FLOAT_WORD(x,ix&0x80000000); /* return +-0 */ + SET_FLOAT_WORD(x,i0&0x80000000); /* return +-0 */ return x; } } |