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 30703-cd958ce78c) Lines: 1467 1530 95.9 % Date: 2026-02-23 09:22:43 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296188
RgX_gtofp_bit	7029731
RgX_normalize1	35731
X2XP1	5989680
ZX_Uspensky	1313689
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15204
ZX_graeffe	5390
ZX_realroots_irred	48567
ZX_rescale2prim	2233500
ZX_sturm	6395
ZX_sturm_i	122978
ZX_sturm_irred	116583
ZX_sturmpart	1128189
ZX_to_ZiX	16452156
ZiX_sqr	99017100
_gen_nored	11206195
_gen_one	14472962
_gen_zero	326029
_intervalcmp	0
_mp_add	24663994
_mp_cmul	34773989
_mp_mul	4374634
_mp_sqr	6298197
_mp_sub	0
_sqrtnr	22597
a_posteriori_errors	536994
abs_update	8004754
abs_update_r	778592
all_roots	535896
append_clone	1613599
bkeval_single_power	5235453
check_ab	1178816
checkbound	2354762
checkvalidpol	266890
clean_roots	535936
cleanroots	231763
cmp_complex_appr	2237403
conformal_basecase	1403594
conformal_mapping	467826
conformal_pol	1403717
dblexp	6547839
dbllog2	302105122
dft	502268
dual_modulus	1012285
eval_rel_pol	13135711
fft	14157066
fft2	7462
findpower	40948354
fix_roots	536996
fix_roots1	398365
fujiwara_bound	2271121
fujiwara_bound_real	1406670
graeffe	49501924
homothetie	1609763
homothetie2n	9955359
homothetie_gauss	36489558
ind_maxlog2	902521
initdft	996148
isexactpol	239753
isexactscalar	931714
isreal	961710
isvalidcoeff	1228143
logmax_modulus	4449883
logmin_modulus	1614462
logmodulus	606604
logpre_modulus	606605
logradius	493879
lower_bound	40948054
mydbllog2i	226409178
mydbllog2r	56173999
mydbllogr	9545752
mygprec	63747886
mygprec_absolute	4337753
mygprec_special	537000
mygprecrc	215150144
mygprecrc_special	2178381
myshiftic	135833687
myshiftrc	35498566
newton_polygon	5505769
optimize_split	493883
parameters	493880
pol_to_gaussint	17585547
polgraeffe	14
polmod_to_embed	84
polrootsbound	27130
polrootsbound_i	27123
polsolve	166689
quicktofp	6977115
realroots	50627
refine_F	502270
refine_H	2460184
root_error	1911706
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288523
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494245
split_0_1	468185
split_0_2	468187
split_1	467828
split_2	493881
split_complete	1525483
split_fromU	493883
split_pols	166687
splitcauchy	166695
splitpoleval	5235969
tocomplex	1213261
update_radius	493881
usp	1125868

Generated by: LCOV version 1.16