c语言中用反函数表示角度

这篇博客介绍了如何在C语言中利用math.h库的反三角函数(acos、asin、atan、atan2)来将弧度值转换为角度值。示例代码展示了如何将这些函数的计算结果乘以180.0/3.1416得到对应的角度表示。

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头文件 math.h
反3角函数有 acos(double),asin(double),atan(double),atan(double,double),
返回值 double 型弧度值转角度要 *180.0/3.1416
例:
#include <stdio.h>
#include<stdlib.h>
#include<math.h>
int main()
{
double x=0.5;
printf("acos
Rebuild started: Project: Project *** Using Compiler &#39;V6.22&#39;, folder: &#39;E:\Keil_v5\ARM\ARMCLANG\Bin&#39; Rebuild target &#39;Target 1&#39; assembling startup_stm32f10x_md.s... Start/core_cm3.c(445): error: non-ASM statement in naked function is not supported 445 | uint32_t result=0; | ^ Start/core_cm3.c(442): note: attribute is here 442 | uint32_t __get_PSP(void) __attribute__( ( naked ) ); | ^ Start/core_cm3.c(465): error: parameter references not allowed in naked functions 465 | "BX lr \n\t" : : "r" (topOfProcStack) ); | ^ Start/core_cm3.c(461): note: attribute is here 461 | void __set_PSP(uint32_t topOfProcStack) __attribute__( ( naked ) ); | ^ Start/core_cm3.c(479): error: non-ASM statement in naked function is not supported 479 | uint32_t result=0; | ^ Start/core_cm3.c(476): note: attribute is here 476 | uint32_t __get_MSP(void) __attribute__( ( naked ) ); | ^ Start/core_cm3.c(499): error: parameter references not allowed in naked functions 499 | "BX lr \n\t" : : "r" (topOfMainStack) ); | ^ Start/core_cm3.c(495): note: attribute is here 495 | void __set_MSP(uint32_t topOfMainStack) __attribute__( ( naked ) ); | ^ 4 errors generated. compiling core_cm3.c... compiling misc.c... compiling system_stm32f10x.c... compiling stm32f10x_adc.c... compiling stm32f10x_dac.c... compiling stm32f10x_exti.c... compiling stm32f10x_dbgmcu.c... compiling stm32f10x_dma.c... compiling stm32f10x_crc.c... compiling stm32f10x_cec.c... compiling stm32f10x_bkp.c... compiling stm32f10x_can.c... compiling stm32f10x_flash.c... compiling stm32f10x_pwr.c... compiling stm32f10x_fsmc.c... compiling stm32f10x_
03-31
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