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include/fixedmath.h: Add macros for conversion between types b16_t and type double

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This commit is contained in:
Gregory Nutt 2019-03-16 13:04:03 -06:00
parent 56c7b65094
commit 42628d2209
1 changed files with 87 additions and 85 deletions
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40
include/fixedmath.h
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@ -81,24 +81,24 @@
#define b16MIN 0x80000000 /* Min value of b16_t */
#define ub16MIN 0x00000000 /* Min value of ub16_t */
#define b32MILLION 0x000f424000000000 /* 1000000 */
#define b32THOUSAND 0x000003e800000000 /* 1000 */
#define b32HUNDRED 0x0000006400000000 /* 100 */
#define b32TEN 0x0000000a00000000 /* 10 */
#define b32ONE 0x0000000100000000 /* 1 */
#define b32HALF 0x0000000080000000 /* 0.5 */
#define b32ONETENTH 0x000000001999999a /* 0.1 */
#define b32ONEHUNDRTH 0x00000000028f5c29 /* 0.01 */
#define b32ONETHOUSTH 0x0000000000418937 /* 0.001 */
#define b32ONETENTHOU 0x0000000000068db9 /* 0.0001 */
#define b32HALFPI 0x00000001921eb9ff /* 1.57078134990 */
#define b32PI 0x00000003243f6b4f /* 3.14159269980 */
#define b32TWOPI 0x00000006487ae7fd /* 6.28312539984 */
#define b32MILLION 0x000f424000000000LL /* 1000000 */
#define b32THOUSAND 0x000003e800000000LL /* 1000 */
#define b32HUNDRED 0x0000006400000000LL /* 100 */
#define b32TEN 0x0000000a00000000LL /* 10 */
#define b32ONE 0x0000000100000000LL /* 1 */
#define b32HALF 0x0000000080000000LL /* 0.5 */
#define b32ONETENTH 0x000000001999999aLL /* 0.1 */
#define b32ONEHUNDRTH 0x00000000028f5c29LL /* 0.01 */
#define b32ONETHOUSTH 0x0000000000418937LL /* 0.001 */
#define b32ONETENTHOU 0x0000000000068db9LL /* 0.0001 */
#define b32HALFPI 0x00000001921eb9ffLL /* 1.57078134990 */
#define b32PI 0x00000003243f6b4fLL /* 3.14159269980 */
#define b32TWOPI 0x00000006487ae7fdLL /* 6.28312539984 */
#define b32MAX 0x7fffffffffffffff /* Max value of b16_t */
#define ub32MAX 0xffffffffffffffff /* Max value of ub16_t */
#define b32MIN 0x8000000000000000 /* Min value of b16_t */
#define ub32MIN 0x0000000000000000 /* Min value of ub16_t */
#define b32MAX 0x7fffffffffffffffLL /* Max value of b16_t */
#define ub32MAX 0xffffffffffffffffLL /* Max value of ub16_t */
#define b32MIN 0x8000000000000000LL /* Min value of b16_t */
#define ub32MIN 0x0000000000000000LL /* Min value of ub16_t */
/* Conversions between b32, b16, and b8 ***********************************/
@ -159,6 +159,8 @@
#define uitoub16(i) (((ub16_t)(i)) << 16) /* Conversion from unsigned integer */
#define b16tof(b) (((float)(b))/65536.0) /* Conversion to float */
#define ftob16(f) (b16_t)(((f)*65536.0)) /* Conversion from float */
#define b16tod(b) (((double)(b))/65536.0)) /* Conversion to double */
#define dtob16(f) (b16_t)(((f)*65536.0)) /* Conversion from double */
#define b16trunc(a) ((a) & 0xffff0000) /* Truncate to integer */
#define b16round(a) (((a)+0x00008000) & 0xffff0000)
#define b16frac(a) ((a) & 0x0000ffff) /* Take fractional part */
@ -206,8 +208,8 @@
#define b32toi(a) ((a) >> 32) /* Conversion to integer */
#define itob32(i) (((b32_t)(i)) << 32) /* Conversion from integer */
#define uitoub32(i) (((ub32_t)(i)) << 32) /* Conversion from unsigned integer */
#define b32tod(b) (((double)(b))/((long long)1 << 32)) /* Conversion to double */
#define dtob32(f) (b32_t)(((f)*(double)((long long)1 << 32))) /* Conversion from double */
#define b32tod(b) (((double)(b))/b32ONE) /* Conversion to double */
#define dtob32(f) (b32_t)(((f)*(double)b32ONE)) /* Conversion from double */
#define b32trunc(a) ((a) & 0xffffffff00000000) /* Truncate to integer */
#define b32round(a) (((a)+0x0000000080000000) & 0xffffffff00000000)
#define b32frac(a) ((a) & 0x00000000ffffffff) /* Take fractional part */