diff options
| author | Jeff Epler <jepler@gmail.com> | 2020-08-04 13:12:44 -0500 |
|---|---|---|
| committer | Jeff Epler <jepler@gmail.com> | 2020-08-04 14:45:45 -0500 |
| commit | c0b32976e8bff4a04cd4f172535e3b153143b417 (patch) | |
| tree | eea11be6d7644137279c8518334e91e1b4b527b7 /lib | |
| parent | d3fb6c96da9dc38ea24a221e11f05cdbbddb34c9 (diff) | |
libm: rem_pio2: Reduce size of static array
This array was of 32-bit values, but the entries were only ever
in the 0-255 range. Convert to uint8_t.
Testing performed: The result of the sum-of-sin was unchanged
>>> import math; sum(math.sin(2.**i) for i in range(21))
1.42069
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/libm/ef_rem_pio2.c | 4 | ||||
| -rw-r--r-- | lib/libm/fdlibm.h | 2 | ||||
| -rw-r--r-- | lib/libm/kf_rem_pio2.c | 4 |
3 files changed, 5 insertions, 5 deletions
diff --git a/lib/libm/ef_rem_pio2.c b/lib/libm/ef_rem_pio2.c index c6dbe4587..1a9547503 100644 --- a/lib/libm/ef_rem_pio2.c +++ b/lib/libm/ef_rem_pio2.c @@ -35,9 +35,9 @@ * Table of constants for 2/pi, 396 Hex digits (476 decimal) of 2/pi */ #ifdef __STDC__ -static const __int32_t two_over_pi[] = { +static const __uint8_t two_over_pi[] = { #else -static __int32_t two_over_pi[] = { +static __uint8_t two_over_pi[] = { #endif 0xA2, 0xF9, 0x83, 0x6E, 0x4E, 0x44, 0x15, 0x29, 0xFC, 0x27, 0x57, 0xD1, 0xF5, 0x34, 0xDD, 0xC0, 0xDB, 0x62, diff --git a/lib/libm/fdlibm.h b/lib/libm/fdlibm.h index 67bc622ea..91698a6f9 100644 --- a/lib/libm/fdlibm.h +++ b/lib/libm/fdlibm.h @@ -188,7 +188,7 @@ extern float __ieee754_scalbf __P((float,float)); extern float __kernel_sinf __P((float,float,int)); extern float __kernel_cosf __P((float,float)); extern float __kernel_tanf __P((float,float,int)); -extern int __kernel_rem_pio2f __P((float*,float*,int,int,int,const __int32_t*)); +extern int __kernel_rem_pio2f __P((float*,float*,int,int,int,const __uint8_t*)); /* A union which permits us to convert between a float and a 32 bit int. */ diff --git a/lib/libm/kf_rem_pio2.c b/lib/libm/kf_rem_pio2.c index 62aa242bc..b27e47ea8 100644 --- a/lib/libm/kf_rem_pio2.c +++ b/lib/libm/kf_rem_pio2.c @@ -62,10 +62,10 @@ two8 = 2.5600000000e+02, /* 0x43800000 */ twon8 = 3.9062500000e-03; /* 0x3b800000 */ #ifdef __STDC__ - int __kernel_rem_pio2f(float *x, float *y, int e0, int nx, int prec, const __int32_t *ipio2) + int __kernel_rem_pio2f(float *x, float *y, int e0, int nx, int prec, const __uint8_t *ipio2) #else int __kernel_rem_pio2f(x,y,e0,nx,prec,ipio2) - float x[], y[]; int e0,nx,prec; __int32_t ipio2[]; + float x[], y[]; int e0,nx,prec; __uint8_t ipio2[]; #endif { __int32_t jz,jx,jv,jp,jk,carry,n,iq[20],i,j,k,m,q0,ih; |