Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - rootpol.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30532-0c728fd268) Lines: 1467 1530 95.9 % Date: 2025-10-18 09:22:31 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
scalepol2n	0
ZX_Uspensky_equal_yes	14
polgraeffe	14
ZX_Uspensky_no	21
ZX_Uspensky_equal	28
rootsdeg0	42
FFT	56
FFTinv	56
polmod_to_embed	84
FFT_i	98
sol_ok	3378
ZX_graeffe	5390
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15275
_sqrtnr	22710
polrootsbound_i	27291
polrootsbound	27298
RgX_normalize1	35899
ZX_realroots_irred	48651
realroots	50627
ZX_sturm_irred	116774
ZX_sturm_i	123169
split_pols	166720
polsolve	166722
splitcauchy	166727
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	267058
QX_complex_roots	296415
_gen_zero	326140
fix_roots1	398461
split_1	467916
conformal_mapping	467920
split_0_1	468280
split_0_2	468281
logradius	493966
optimize_split	493968
parameters	493968
split_2	493968
split_fromU	493968
update_radius	493968
split_0	494334
refine_F	502353
dft	502360
all_roots	536123
clean_roots	536165
fix_roots	537218
a_posteriori_errors	537224
mygprec_special	537229
logpre_modulus	606749
logmodulus	606750
abs_update_r	778670
ind_maxlog2	902659
isexactscalar	931714
isreal	961884
initdft	996329
dual_modulus	1012449
usp	1126057
ZX_sturmpart	1128244
check_ab	1178872
tocomplex	1213957
isvalidcoeff	1230229
ZX_Uspensky	1313888
conformal_basecase	1403866
conformal_pol	1403985
fujiwara_bound_real	1406925
split_complete	1525883
homothetie	1610082
append_clone	1614173
logmin_modulus	1614753
root_error	1912561
mygprecrc_special	2179178
ZX_rescale2prim	2233890
cmp_complex_appr	2238532
fujiwara_bound	2271789
checkbound	2354872
refine_H	2460411
scalepol	4289341
mygprec_absolute	4339937
_mp_mul	4374568
logmax_modulus	4450813
bkeval_single_power	5235733
splitpoleval	5236049
newton_polygon	5507152
X2XP1	5990652
_mp_sqr	6298302
dblexp	6549002
quicktofp	6979034
RgX_gtofp_bit	7031543
abs_update	8005182
mydbllogr	9546629
homothetie2n	9957446
_gen_nored	11203955
eval_rel_pol	13138109
fft	14159218
_gen_one	14473280
ZX_to_ZiX	16455803
pol_to_gaussint	17588942
_mp_add	24661946
_mp_cmul	34768841
myshiftrc	35506066
homothetie_gauss	36498440
lower_bound	40955363
findpower	40955994
graeffe	49506238
mydbllog2r	56768334
mygprec	63756765
ZiX_sqr	99027890
myshiftic	135803506
mygprecrc	215177160
mydbllog2i	226434753
dbllog2	302692270

Generated by: LCOV version 1.16